Tyrone - Thanks for the info! Well, at least I know that it can be done. $800 is pricey. Maybe I don't want it so bad anymore. My current head unit is dying a slow death, so a replacement will be necessary at some point. I wonder if I get the tape unit, I could get credit for my old one as a core exchange.

Duh?

The cassette HU is not a good option on these cars and if I had to do it over never would have done it with the info I have gathered...

It appears you may not be able to use Aux Audio adapter with it as well...I can not believe BMW offered it as a no cost option and left people out on the cold and did not tell the sales people the downfalls and solutions...poor product info.